Quality control material for reagentless measurement of analytes
First Claim
1. A method of monitoring calibration of a spectrophotometric apparatus comprising one or more than one calibration algorithm for one or more than one analyte comprising:
- i) measuring absorbance of a quality control material with said apparatus to obtain a measurement, said quality control material exhibiting an absorbance spectra characterized as having a negative slope for a continuous spectral segment from about 5 nm to about 200 nm in length said spectral segment including a principal calibration wavelength for said one or more than one analyte;
ii) calculating one or more than one value from said measurement using said one or more than one calibration algorithm; and
iii) comparing said one or more than one value with an assigned value given to said quality control material for each of said one or more than one analyte, thereby monitoring said one or more than one calibration algorithm of said apparatus.
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Accused Products
Abstract
A method of monitoring calibration of a spectrophotometric apparatus that includes one or more than one calibration algorithm for one or more than one analyte, involves measuring absorbance of a quality control material with the apparatus to obtain a measurement, calculating one or more than one value from the measurement using the one or more than one calibration algorithm, and comparing the one or more than one value with an assigned value given to the quality control material for each of the one or more than one analyte. The quality control material exhibits an absorbance spectrum having a negative slope for a continuous spectral segment from about 5 nm to about 200 nm in length, and the spectral segment includes a principal calibration wavelength for the one or more than one analyte. A reagentless method for determining the concentration of one or more than one analyte in a sample in a spectrophotometric apparatus having at least one primary calibration algorithm is also disclosed. Also provided is a method for selecting one or more than one substance as a quality control material for monitoring one or more than one primary calibration algorithm on a spectrophotometric apparatus. Also described is a quality control material for monitoring the calibration algorithms for two or more than two analytes including one or more than one substance having a combined absorption spectrum exhibiting a negative slope for a continuous spectral segment from about 5 nm to 200 nm in length, in a portion of an absorption spectrum.
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Citations
60 Claims
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1. A method of monitoring calibration of a spectrophotometric apparatus comprising one or more than one calibration algorithm for one or more than one analyte comprising:
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i) measuring absorbance of a quality control material with said apparatus to obtain a measurement, said quality control material exhibiting an absorbance spectra characterized as having a negative slope for a continuous spectral segment from about 5 nm to about 200 nm in length said spectral segment including a principal calibration wavelength for said one or more than one analyte; ii) calculating one or more than one value from said measurement using said one or more than one calibration algorithm; and iii) comparing said one or more than one value with an assigned value given to said quality control material for each of said one or more than one analyte, thereby monitoring said one or more than one calibration algorithm of said apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method of monitoring calibration of a spectrophotometric apparatus comprising one or more than one calibration alaorithm for a perfluorocarbon-like blood substitute, turbidity, or a combination thereof, wherein said turbidity is measured in units of a lipid emulsion, comprising:
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i) measuring absorbance of a quality control material with said apparatus to obtain a measurement, said quality control material exhibiting an absorbance spectra within the range from about 700 nm to about 1100 nm; ii) calculating one or more than one value from said measurement using said one or more than one calibration algorithm; and iii) comparing said one or more than one value with an assigned value given to said quality control material for each of said perfluorocarbon-like blood substitute, said turbidity, or a combination thereof;
thereby monitoring said one or more than one calibration alciorithm of said apparatus. - View Dependent Claims (28, 29)
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30. A method of monitoring calibration of a spectrophotometric apparatus comprising one or more than one calibration algorithm for a perfluorocarbon-like blood substitute, turbidity, or a combination thereof wherein said turbidity is measured in concentration units of a lipid emulsion, comprising:
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i) measuring absorbance of a quality control material with said apparatus to obtain a measurement, said quality control material exhibiting an absorbance spectra characterized as having a negative slope for a continuous spectral segment from about 5 nm to about 400 nm within the range of the absorbance spectra from about 700 nm to about 1100 nm; ii) calculating one or more than one value from said measurement using said one or more than one calibration algorithm; and iii) comparing said one or more than one value with an assigned value given to said quality control material for said one or more than one of a perfluorocarbon-like blood substitute, turbidity, or a combination thereof, wherein said turbidity is measured in units of a lipid emulsion;
thereby monitoring said one or more than one calibration algorithm of said apparatus. - View Dependent Claims (31, 32)
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33. A method for selecting one or more than one substance as a quality control material for monitoring at least one primary calibration algorithm on a spectrophotometric apparatus comprising:
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i) identifying a principal calibration wavelength for each of one or more than one substance; ii) measuring absorbance spectra of said one or more than one substance; and iii) selecting one or more than one of said one or more than one substance exhibiting a negative slope in said absorbance spectra, for a continuous spectral segment from about 5 nm to about 200 nm in length, said spectral segment including said principal calibration wavelength for each of said one or more than one substance. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A method for selecting one or more than one substance as a quality control material for monitoring at least one primary calibration algorithm on a spectrophotometric apparatus for one or more than one of a perfluorocarbon-like blood substitute and turbidity, wherein turbidity is measured in terms of concentration units of a lipid emulsion, comprising:
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i) identifying a principal calibration wavelength for each of one or more than one of said perfluorocarbon-like blood substitute and said turbidity; ii) measuring absorbance spectra of said one or more than one substance; and iii) selecting one or more than one of said one or more than one substance exhibiting an absorbance value within the range from about 700 nm to about 1100 nm, wherein said range includes said principal calibration wavelength for one or more than one of said perfluorocarbon-like blood substitute and said turbidity.
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44. A method for selecting one or more than one substance as a quality control material for monitoring at least one primary calibration algorithm on a spectrophotometric apparatus for one or more than one of a perfluorocarbon-like blood substitute and turbidity, wherein turbidity is measured in terms of concentration units of a lipid emulsion, comprising:
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i) identifying a principal calibration wavelength for each of one or more than one of said perfluorocarbon-like blood substitute and said turbidity; ii) measuring absorbance spectra of said one or more than one substance; and iii) selecting one or more than one of said substances exhibiting absorbance spectra as having a negative slope for a continuous spectral segment from about 5 nm to about 400 nm in length within the range of wavelengths from about 700 nm to about 1100 nm, wherein said range includes said principal calibration wavelength for one or more than one of said perfluorocarbon-like blood substitute and said turbidity.
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- 45. A quality control material for monitoring the calibration algorithms for two or more than two analytes comprising, one or more than one substance having a combined absorption spectrum exhibiting a negative slope for one or more than one continuous spectral segment, wherein each of said one or more than one continuous spectral segment is from about 5 nm to 200 nm in length, and wherein said one or more than one continuous spectral segment includes one or more than one principal calibration wavelengths, for said two or more than two analytes.
Specification